Wrapping machine



June 29 1926.

H. H. METCALF.

WRAPPING MACHINE Filed Ju y 24, 1925 6 Sheets-Sheet 1 gwewio a Howard fflletca/f June 29 1926-.

H. H. METCALF WRAPPING MACHINE Filed July 24, 1925 6 Sheets-Shed: 2

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H. H. METCALF WRAPPING MACHINE Filed July '24. 1925 .6 Sheetsl-Sh'et 4 swam doc I Howard If Metcalf Gnome u 5 a m 2 t mm m u m 6. 0 m w m w H 1, m M 5 6 I w i 0 E M6 m 1 r m m m u fig m m G h i @u M m .w L. H we H m m m m v F 34, g. Jr;

June 29 1926.

June 29 1926.

H. H. METCALF WRAPPING MACHINE Filed July 24, 1925 6 SheetS-Shf. 6

gwlov I ward 1'7. Mazcalf I E proved nowann H. METCALF, OF BATTLE GREEK, MICHIGAN, ASSIGNORTO BATTLE CREEK n BREAD WRAPPING MACHINE (30., OF BATTLE CREEK, MICHIGAN.

wnarrme MACHINE.

Application and July 24. 1925. serr i No. 45,817.

This invention relates to improvements in wrapping machines.

The main objects of the invention are First,to provide in awrapping machine means for introducing an insert or slip of advertising or other matter with the wrapper.

Second, to provide a structure of the class described in which the inserts are automatically fed one at a time and caused to attach to the waxed or paraffined wrapper so that they will not become dislocated during the following, wrapping and sealing operations. Third, to provide in a structure of the class described efiective means for feeding and controlling the inserts.

Objects pertaining to details and economies of construction and operation of my invention will definitely appear from the detailed description to follow.

I accomplish the objects of my invention by the devices and means described in the following specification. The invention is clearly defined and pointed out in the claims.

A structure embodying the features of my invention is clearly illustrated in the accompanying drawing forming a part of this application, in which:

Fig. I is a fragmentary perspective View of a sealing machine embodying the features of my invention, such portions only of the scaling machine being indicated as to show' the relation of my improvements thereto.

Fig. II is a side elevation of my iminsert feeding and securing mechanism.

Fig. III is a detail view mainly in vertical section on a 3-3 of Fig.II. I

Fig. IV 'is a detail view partially in vertical section on a. line corresponding to line H of Fig. II. r

Fig. V is an enlarged fragmentary perspective view-showing structural details.

Fig. VI'is a detail longitudinal section on a line corresponding to line 6-6 of Figs. III and V, showing details of the insert feed mechanism, the insert plunger being in its retracted position.

, Fig. VII is a detail section corresponding to that of Fig. with the insert feed plunger in its fully projected position. Fig. VIII is a fragmentary view showline corresponding to line Y I .comrng article engaging feed mechanism 2.

ing details of the insert sealing or afiixing mechanism. I

Fig. IX is a detail view partially in section on a line corresponding to line 9'9 of Fig. VIII, showing details of the heating unit. 1

Fig. X corresponding to line 10- 10 of Fig. V showing details of the aflixing -mechanis1n.

Fig. XI is a perspective view of preferred form of insert which consists of a strip having a double foldtherein providing a flaplike projection at one end.

'Fig. XII illustrates another form of in- ?Iert having but a single fold providing a arrows at the ends of the section lines and similar numerals of reference indicate similar parts throughout the several views.

Referring to the drawing, 1 represents the frame of a wrapping and sealing machine for wrapping articles such a s loaves of bread and the like with waxed paper. practice I have embodied my improvements in the type of machine shown in United States Letters Patent to Brownel], No. 1,416,165, dated May 16,1922.

The sealing mechanism comprises a paper feed mechanism numeral 2 and includes a feed control mechanism designated generally by the numeral 3 which is controlled from a trip 4 associated with the feed belt 5; The trip is mounted on'a 'rockshaft 6 which has an arm 7 thereon connected by the link 8 to the paper feed control mechanism 3 so that the paper feed mechanism is fldriven only the. machine, the inthe trip. 4:, and, through the mechanism pointed out, setting the paper feed into operation.

I have illustrated my improvements as a form of attachment consistingofa main frame 9 which is mounted on the front end of the sealing machine frame. This frame when articles are fed to operatively' is a fragmentary section on a line In the drawing the sectional views are designated generally by the 9 is provided with a support 10 for the\ The aper 1s passed'from paper'roll 11.

roll 12 to the paper the roll 11 over a gui e Belowthe path bf the web of paper is the hopper 13 for the inserts 14, see Figs.

which consist of' a slip or XI and XII, Y

double fold therein, one fold sheet having a providing a flap 15, see Fig. XI. In Fig.

' XII the insert 16 has a single fOld. provarying thickness in the stack of inserts.

occasioned by the flap fold at one end thereof.

The post 19 is carried by the arm-22 which is pivoted at23 on the hanger 24, the arm being urged yieldingly upward by the coiled spring 25 to limit the upward movement of the hopper bottom. The post is provided with a notch 26 which is engaged by the dog 27, a notch 28 being provided for holding the bottom in its retracted or lowest position for convenience in filling. This dog engaging the notch 26 prevents the bottom movin upward into the path of the insert feeding plunger 29. i

The insert feeding plunger 29 is bladelike in form and reciprocates above the hopper, being supported and guided by the ways 30. The plunger, however, in its retracted osition-lies over a portion of the hopper ut is. in such a position that on its forward movement it passes under the flap of the insert, see Figs. VI and VII.

To prevent the top insert being pushed or drawn out of the hopper on the retracting movement of the plunger, the plunger shank 32 is provided with a longitudinal slot 33 to receive the upwardly projecting lug 34 on therear wall 35 of the hopper, see Fig. V, the wall of the hopper, in effect, thus projecting above the plunger,

The plunger is reciprocated by means of the segmen't36 coactlng with the rack 37 on the plunger shank 32. The segment 36 is mounted on a sleeve 38. connected by the pitman 39 to the crank 40 on the shaft 41.

The pitman or link 39 is connected to an.

arm 42 on the sleeve 38. The driving means for the shaft38 is controlled by the feeding of the articles to be wrapped, and being operatively connected to the shaft. 41, as stated, controls the paper feed.

This driving .and'control mechanism comprises a clutch mechanism designated generallyby the numeral 43'and'connected by the link 44 to an arm 45 on the rockshaft 6. The control clutch is connected by the sprocket chain 46. to a-sprocket wheel 47 on the shaft "41. Thisshaft is provided with abrank 48 which is-connected by the link 49 to the arm 50 on the rockshaft 38 so that onto the affixing bed 51 they are carried under the spring finger 53 which has a downturned end 54 adapted to normally lie below the plane of the bedas shown in Fig. VI,

and holding the insert until the plunger has passed under the flap.

While the inserts are supported by the. bed. 51, heat is applied to the web of paper above the flap of the insert melting or warming the paraffin sufliciently so that the insert will adhere to the wrapper. heating and affixing means comprises the heating roller 55 having a. heating unit 56 therein, the roller having an enlarged portion of a length corresponding to the area which it is desired to heat. A pressing roller 57 follows the heating'roller, see details illustrated in Figs. VI and VII.

The heating roller is provided with a shaft 58 carried by the arms 59 on the rod 60 which has rollers 61 traveling in opposed ways 62. This rod 60 constitutes a carnage.

i The cooling and pressing roller 57 is car- This to the roller 57. The carriage 60 is con.- 1

nected by the links 69 to the cross rod 70 carried by the arm 50 and a corresponding arm 50' on the opposite side of the machine so that the heating and pressing rollers are actuated in synchronism with the one mechanlsm.

The heating and pressing rollers are controlled to be brought into and out of operating positionby means of the cam rockers 71 which are pivoted at 72 to provide tracks for the rollers 73 and 74 on the roller shafts 58 and74, respectively. These cam tracks are rocked by means of the cams 75 acting on the arms 76 pivoted at 77, the cam tracks being connected to the arms by means of the links 78 so that the heating and affixing rollers are lifted on their return stroke. The parts are proportioned so that the heating roller passes off the end of the feed plunger on its forward stroke, thereby limiting its pressure engagement with the web of paper and permitting the pressing roller to .travel over substantially the same surface as that coveredby the heating roller.

For convenience in making the electrical connections to the heating unit, the rbller 7 3at one end is carried by a rod 79 mounted on the arm 59 and carrying a bracket 80 for the left-hand roller 73. The brushes 81 are mounted on this rod 79 to coact with the contact rings82 for the heating unit, see Figs. VIII and IX.

The .controlling cam track 71 forthe affixing rollers hold the pressure roller. in operative relation until approximatelythe point at which heat has been applied is reached, and when they come into engagement with the Web of paper press the heated web upon the flap of the insert while the insert is supported by the feed plunger; The" heating roller passing beyond the end of the feedplunger leaves the web for there is not suificient contact between the web and the rollerr to materially heat the paraffin of the web.

' The lifting of the cam tracks 71 is timed so that on the return stroke of the aflixing carriage the rollers are out of contactingosition. These movements are all properly timed or synchronized.

My improved insert aflixing means iafiixes an insert to each wrapper so that when the wrapper is applied to the article,pthe insert is enclosed, thus enabling the introduction of advertising and descriptive matter, directions for use, recipes, or the like, as may be desired.

I have illustrated and described my improvements in an embodiment which I have found very practical. I have not attempted to illustrate or describe various embodiments I or adaptations as I believe the disclosure made will enableth-ose skilled 'in the. art I to which myinvention relates to embody or adapt my improvements as may be desired.

Having thus described my invention what I claim as-new and desire to secure byv Let- 't'er's Patent is 1. Ina structure of the class described, the combination with paper feed means, of an insertmechanism comprising a hopper disposed below the path of the paper and having a spring supportedpivotally mount- I edbottom, a table at the rear of said hopper,

a bladelike insert feed plunger reciprocating' above the hopper and table, said -feed plunger having a longitudinally slotted shank, the rear wall of said hopper having a part projecting into said slot, a spring insert tretalning finger mounted above sa1d plunger and adapted to rest upon the rear 1- edge of the top insert in the hopper whenthe plunger is in retracted position, a reciprocating carriage provided with independent pivoted spring pressed arms, heating and pressmg rollers mounted on said arms for independent vertical movement, pivoted cam tracks for said heating and pressing rollers whereby on the forward stroke of the carriage the pressing roller is caused to engage the work at approximately the point of engagement of the heating roller therewith actuating cams for said cam tracks acting to hold said heating and pressing rollers in inoperative relationon the return stroke of the carriage, operating connections for said plunger, carriage and cam track control cams whereby the actuating thereof is timed to cause the heating and pressing rollers to'act while the insert is supported by said plunger, article controlled driving means for said paper feed means, and article controlled driving means for said insert mechanism.

2. In a structure of the class described, the combination with'paper feed means, of

an insert m'echanism comprising a hopper,

a blade-like insert feed plunger reciprocat ing above the hopper and table, a reciprocating carriage provided with independent piv-y oted spring pressed arms, heating and press- .ing rollers mounted on said arms for independent vertical movement, pivoted cam tracks for said heating and pressing rollers whereby on the forward stroke of the carriage the pressing" roller is caused to engage the work at approximately the point of engagement of. the-heating roller therewith,

actuating cams for saidcam tracks acting to holdsaid heating and pressing rollers in inoperative relation on the return stroke of the j carriage, operating co'nnections'for said feed plunger, carriage and cam track control cams whereby the actuating'thereof is timed to cause the heating andpressing rollers toact while the insert is supported by said plunger, article controlled driving means for said paper feed means, and article controlled driving means for'said insert mechanism.

3: In a structure of the class described, the combination with-paper feed means, of

an insert hopper disposed below the path of the pa er andhavmgaspring supported Piv rear of, said hopper, a blade-like insert feed plunger reciprocating above the hopper and table, said feed plunger having a longitudiy' mounted bottom, a table at the nally slotted shank, the rear wall of said hopper having a part projecting into said caused to engage the work at approximately the point of engagement of the heating roller therewith, actuating cams for said cam tracks acting to hold'said heating and pressing rollers in inoperative relation on the return stroke of the carriage, and operating connections for said feed plunger, carriage and cam track control cams whereby the actuating thereof is timed to cause the heating and pressing rollers to act while the insert is supported by said plunger.

4. In a structure of the class described, the combination with paper feed means, of an insert hopper, a table at the rear of said hopper, a blade-like insert feed plunger reciprocating above the hopper and table, a reciprocating carriage provided with independent pivoted spring pressed arms, heating and pressing rollers mounted on said arms for independent vertical movement, pivoted cam tracks for said heating and pressing rollers whereby on the forward stroke of the carriage the pressing roller is caused to engage the work at approximately the point of engagement of the heating roller therewith, actuating cams for said cam tracks acting to hold said heatingand pressing rollers in inoperative relation on the return stroke of the carriage, and operating connections for saidfeed plunger, carriage and cam track control cams whereby the ac- I tuating thereof is timed to causethe heating and pressin rollers to act while the insert is supported by said plunger.

'5. In a structure of the class described, the combination with paper feed means, of an insert mechanism comprising a hopper having a spring supported pivotally mounted bottom, a table at the rear of said hopper, an insert feedplunger delivering to said table, a yielding insert retaining finger adapted to engage the top insert in the h0pper when the plunger is in retracted position, a, *rec1procat1ng carriage; heatlng and pressing rollers mounted on said carnage for independent vertical movement, adjustably mounted cam tracks for said heating and pressing rollers whereby on the forward stroke of the carriage the pressing roller is raised to engage the work at approximately the point of engagement of the heating roller therewith, actuating means for said cam tracks acting to hold said'heating and pressing rollers in inoperative relation on the return stroke of the carriage, and operating connections for said feed plunger, car-' riage and cam-track actuating means whereby the actuating thereof 1s timed to cause the heating and pressing rollers to act while the insert is supported by said plunger, article controlled driving means for said paper feed means, and article controlled driving means for said insert mechanism.

6. In a structure of the class described, the combination with paper feed means, of

ciprocating carriage, heating andpressing rollers mounted on said carriage for independent vertical movement, adjustably mounted cam tracks for said heating and pressing rollers whereby on the forward stroke of the carriage the pressing roller is raised to engage the work at approximately the point of engagement of the heating roller therewith, actuatin means for said cam tracks acting to 1101 said heating and pressing rollers in inoperative relation on the return stroke of the carriage, operating connections for said feed plunger, carriage and cam track actuating means whereby the actu 'ating thereof is timed to cause the heating and pressing rollers to act while the insert is supported by said plunger, article controlled driving means for said paper feed means, and article controlled driving means for said insert mechanism.

7. In a structure of the class described, the combination with paper feed means, of

an insert hopper having a spring supported pivotally mounted bottom, a table at the rear of said hopper, an insert feed plunger delivering to said table, a yielding insert retaining finger adapted to engage the top, of the insert in the hopper when the plungeris in retracted position, a reciprocating carinoperative relation on the return stroke of the carriage, and operatlng connections for said feed plunger, carriage and cam track actuating means whereby the actuating thereof is timed to cause the heating and pressing rollers to act while the insert is supported by said plunger.

8. In a structure of the class described, the combination with paper feed means, of an insert hopper, a table at the-rear of said hopper, an insert feed plunger delivering to said table, areciprocating carriage, heatingand pressing rollers mounted on said carriage for independent vertical movement, adjustably mounted cam tracks for said heating and pressing rollers whereby on the forward stroke of the carriage the pressing roller is raised to engage the work at/approximately the point of engagement of the heating roller therewith, actuating means for said cam tracks acting to hold said heating and pressing rollers in inoperative relation on the return stroke of the carriage,

a by said plunger.

' the 9. In a device forafiixing inserts folded to provide flaps to parafiined paper, the com-' bination of an article controlled paper feed means, an insert hopper disposed at the side of the path of the paper and having a pivotally mounted -yieldingly supported bot-- tom acting to urge the inserts toward the path of the paper, a table, a feed plunger adapted upon actuation to engage beneath the flap of the top insert carrying the same upon the table, a reciprocating carriage,

heating and pressing members mounted on said carriage for independent vertical movement, means for causing said heating and pressing members to engage the paper opposite the insert flap at approximately the same point on the forwardstroke of the carriage and while the insert flap is supported by the lunger and to hold said heating and pressing members out of contact with the paper on the return stroke ,of the carriage, and article controlled actuating means for said plunger and carriage.

10. In a device foraifixing inserts folded to provide flaps to paraffined paper, the combination of a paper feed means, an insert hopper disposed at the side of the path of (paper and having a pivotally mounted yiel 'ngly supported bottom acting to urge the inserts toward the path of the paper,

' a table, a feed plunger adapted upon actuation to engage beneath the flap of the top insertcarrying the same upon the table, a reciprocating carriage, heating and pressing members mounted n said carriage for independent vertical movement, and means for the oombmatlon -W1th paper feed means, of

causing said heating and pressing-members to engage the paper opposite the insert flap at approximately the same point on the for ward stroke-of the carriage and 'while the insert flap is supported by the plunger and to hold said. heatlng and pressing members out of contact with the paper on thereturn stroke of the carriage. I

, 11. In a device for aflixing inserts folded to provide flaps combination of paper feed means,-an insert hopper disposed at the sidofthe pathof the paper and havingm pivotally mounted yieldingly supported ottom acting to urge the inserts toward a table, tion to engage insert carrying reciprocating carriage, members on said carriage,

the same upon the table, a heating and pressing and article controlled actuating means for said plunger and carriage.

to 'paraflined paper, the

the path of the paper, a feed plunger adapted upon actua-' beneath the flap of the top the inserts toward the path of the paper, a

table, a feed plunger'adapted upon actuatlon to engage beneath the flap of the top insert carrying the same upon the table, a reciprocating carriage, and heating and pressing members on said carriage.

13. In a structure of the class described,

the combination with paper feed means, of

an insert feeding mechanism adapted to feed inserts folded to provide a flap comprising an insert hopper having a yieldingly supported pivotally mounted bottom, at the rear of said hopper, a feed plunger reciprocating across said hopper and adapted when in its retracted position to overlie the hopper with the top insert thereof engaging the under *side of the plunger with its flap lying at the front of the plunger, a spring finger resting upon the rear edge of the top insert in the hopper when the plunger is in its retracted position, and afiixmg means timed to act while the insert'flap is supported by the projected plunger; I

14. In a structure of the class described, the combination with paper'feed means, of

an insertfeeding mechanism adapted to feed the combination with paper feed means, of

an insert feeding mechanism adapted to feed inserts folded to provide a fla a fee plunger engaging the inserts beneath the.

flaps thereof, and afiixing meanstimed to act while the insert flap is supported by the plunger.

"17. In a parafline'd paper wrappers, the combination of an article controlled paper feed. means,

device for aflixing inserts to a table a, feed plunger I a table, means for feeding inserts one by one to said table, a reciprocating carriage, heating and pressing members mounted on said carriage for independent vertical movement, means for causing said heating and pressing members to engage the paper opposite the insert at approximately the same point on the forward stroke of the carriage, and to hold said heating and pressing members out of contact with the paper on the return stroke of the carriage, and article controlled actuating means for said plunger and carriage. 18. In a device for affixing inserts to parafiined paper wrappers, the combination of paper feed means, a table, means for feeding inserts one by. one to said table, a reciprocating carriage, heating and pressing members mounted on said carriage for independent vertical movement, and means for causing said heating and pressing members to enga the paper opposite the insert at approximately the same point on the forward strodie of the carriage, and to hold said heating and pressing members out 01' contact with the paper on the return stroke of the carriage.

19. In a device for afiixing inserts folded to provide flaps to paraflined paper, the combination of paper feed means, an. insert hopper having a plvotally mounted yieldingly support-ed bottom acting to urge the inserts toward the path of thepaper, a table, a blade-like feed plunger adapted upon actuation to engage beneath the flap of an insert carrying the same .upon the table, a reciprocating carriage, and heating and pressing means engaging the paper opposite the insert flap and while the flap is supported by the plunger.

20. In a device for afiixing inserts folded to provide flaps to paraffined paper, the combination of paper feed means, an insert hopper,a table, a blade-like feed plunger adapted upon actuation to engage beneath the flap of an insert carrying the same upon the table, a reciprocating carriage, and heat-- ing and pressing means engaging the paper opposite the insert flap and while the flap is supported by the plunger.

21. In a device for aflixing inserts' folded to provide flaps to paper, the combination of paperfeed means, an insert hopper hav- -1ng a pivotally mounted yieldingly sup ported bottom acting to urge the inserts to ward the path of the paper, a table, a feed plunger adapted upon actuation to engage beneath the flap ofan insert carrying the same. upon thetable, a reciprooating'carriage, and aflixing means timed to act while the label issupportedsbythe table.-

, 22. In a deviceior afiixing inserts folded to provide flaps to paper, the'combinatibn of paper feed means, an insert hopper, a

table, a feed plunger adapted upon actuation to engage beneath thev flap of an insert carrying the same upon the table, a reciprocating carriage, and afiixing means.

23. In a device for afiixing inserts, the

combination of paperfeed means, a' table, means for feeding inserts one by one to said table, heating and pressing members mounted for independent movement, and means for actuating said heating and pressing members to engage the paper opposite the insert at approximately the same point.

24. The combination with a Wrapping ma- 9 chine including article controlled paper feed means, of an insert feeding mechanism adapted to deliver the inserts one by one in contacting relation to the paper, meansfor heating contacting portions of the paper and pressing the same upon the insert to affix the insert to the paper by means of the paraflin of the paper, and article controlled actuating means for said insert feeding and atiixing means.

2 The combination in a structure of the class described, of article controlled means contacting portions only of the paper and pressing the same upon the insert to aflix the insert to the paperby means of the paraffin of the paper.

27. The combination in a structure of the class described, of means for feeding paraffined paper, means for feeding inserts into contacting relation to the paper, and means for heating contacting portions only of the paper to aflix the inserts to the paper. I

28. The combination with a wrapping machine including article controlled paper feed means, of an insert feedingmechanism adapted to deliver the inserts one by one in contacting relation to the paper, and article controlled alfixing means. l

29.. The combination in a structure of the class described, of article controlled means for feeding paper, means for feeding inserts into contacting relation to the paper, and means for affixing the inserts to the paper, saidinsert feeding and afiixing means being article controlled.

- In witness whereof I have hereunto set my hand. 1

HOWARD H. ,METCALF. 

